Finding the Fourth Proportional to 834,644,266.20, 1,251,966,399.30 and 289,440,912.60
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Solution
The fourth proportional to 834,644,266.20, 1,251,966,399.30 and 289,440,912.60 is: 434,161,368.90
Step by Step Solution
- Step 1: Write the proportion equation
834,644,266.20 : 1,251,966,399.30 = 289,440,912.60 : x - Step 2: Convert to fraction form
834,644,266.20/1,251,966,399.30 = 289,440,912.60/x - Step 3: Cross multiply
834,644,266.20x = 1,251,966,399.30 × 289,440,912.60 - Step 4: Simplify right side
834,644,266.20x = 362,370,297,157,928,000 - Step 5: Solve for x
x = 362,370,297,157,928,000/834,644,266.20 - Step 6: Final answer
x = 434,161,368.90
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.